[LITE][NPU] Refine batch_norm and pool2d op bridges (#2762)

lite/kernels/npu/bridges/batch_norm_op.cc

@@ -64,7 +64,11 @@ int BatchNormConverter(void* ctx, OpLite* op, KernelBase* kernel) {
   float momentum = op_info->GetAttr<float>("momentum");
   float epsilon = op_info->GetAttr<float>("epsilon");
   int mode = 1;  // bnScale, bnBias tensor dims are 1xCx1x1
-  bool use_global_stats = op_info->GetAttr<bool>("use_global_stats");
+  bool use_global_stats = !op_info->HasAttr("use_global_stats") ||
+                          op_info->GetAttr<bool>("use_global_stats");
+  if (!use_global_stats) {
+    LOG(WARNING) << "[NPU] Only use_global_stats=true is supported by HiAI DDK";
+  }
 
   // X node
   std::shared_ptr<Node> x_node = nullptr;

lite/kernels/npu/bridges/pool_op.cc

@@ -61,8 +61,10 @@ int PoolConverter(void* ctx, OpLite* op, KernelBase* kernel) {
     mode = 0;
   } else if (pooling_type == "avg") {
     mode = 1;
-    CHECK(op_info->GetAttr<bool>("exclusive"))
-        << "[NPU] exclusive must be true in HiAI DDK";
+    if (!op_info->GetAttr<bool>("exclusive")) {
+      LOG(WARNING) << "[NPU] Only exclusive=true is supported for the pooling "
+                      "type 'avg' by HiAI DDK";
+    }
   } else {
     LOG(WARNING) << "[NPU] Unsupported pooling type: " << pooling_type;
     return FAILED;